#region Copyright(c) Anton Shelin, Vladimir Timashkov. All Rights Reserved.
// -----------------------------------------------------------------------------
// Copyright(c) 2010 Anton Shelin, Vladimir Timashkov. All Rights Reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
//   1. No Trademark License - Microsoft Public License (Ms-PL) does not grant you rights to use
//      authors names, logos, or trademarks.
//   2. If you distribute any portion of the software, you must retain all copyright,
//      patent, trademark, and attribution notices that are present in the software.
//   3. If you distribute any portion of the software in source code form, you may do
//      so only under this license by including a complete copy of Microsoft Public License (Ms-PL)
//      with your distribution. If you distribute any portion of the software in compiled
//      or object code form, you may only do so under a license that complies with
//      Microsoft Public License (Ms-PL).
//   4. The names of the authors may not be used to endorse or promote products
//      derived from this software without specific prior written permission.
//
// The software is licensed "as-is." You bear the risk of using it. The authors
// give no express warranties, guarantees or conditions. You may have additional consumer
// rights under your local laws which this license cannot change. To the extent permitted
// under your local laws, the authors exclude the implied warranties of merchantability,
// fitness for a particular purpose and non-infringement.
// -----------------------------------------------------------------------------
#endregion

using SharpDom.Attributes;

namespace SharpDom
{
    /// <summary>Extensions for LENGTH attribute value</summary>
    public static class LengthExtension
    {
        /// <summary>Converts INT value into LENGTH value with type="Pixels"</summary>
        /// <param name="value">Source INT value</param>
        /// <returns>Converted LENGTH value, expressed in pixels</returns>
        public static PixelLength pixels(this int value)
        {
            return new PixelLength { BaseValue = value };
        }

        /// <summary>Converts INT value into LENGTH value with type="Percents"</summary>
        /// <param name="value">Source INT value</param>
        /// <returns>Converted LENGTH value, expressed in percents</returns>
        public static PercentLength percents(this int value)
        {
            return new PercentLength { BaseValue = value };
        }

        /// <summary>Converts INT value into LENGTH value with type="Relatives"</summary>
        /// <param name="value">Source INT value</param>
        /// <returns>Converted LENGTH value, expressed in relatives units</returns>
        public static RelativeLength relatives(this int value)
        {
            return new RelativeLength { BaseValue = value };
        }
    }

    // ---------------- Base --------------------

    /// <summary>LENGTH value type - length expressed in pixels or percents</summary>
    public abstract class Length : MultiLength
    {
        /// <summary>Converts INT value into LENGTH type with PIXELS length type</summary>
        /// <param name="value">Numeric value</param>
        /// <returns>Length attribute value</returns>
        public static implicit operator Length(int value)
        {
            return new PixelLength { BaseValue = value };
        }
    }

    /// <summary>LENGTH value type - length expressed in pixels, percents or relative units</summary>
    public abstract class MultiLength : AttributeValue<int>
    {
        /// <summary>Converts INT value into LENGTH type with PIXELS length type</summary>
        /// <param name="value">Numeric value</param>
        /// <returns>Length attribute value</returns>
        public static implicit operator MultiLength(int value)
        {
            return new PixelLength { BaseValue = value };
        }
    }

    // ------------------- Real Classes ------------------------

    /// <summary>LENGTH value type - length expressed in pixels</summary>
    public sealed class PixelLength : Length
    {
        /// <summary>Closed constructor</summary>
        internal PixelLength() { }

        /// <summary>Converts INT value into LENGTH type with PIXELS length type</summary>
        /// <param name="value">Numeric value</param>
        /// <returns>Length attribute value</returns>
        public static implicit operator PixelLength(int value)
        {
            return new PixelLength { BaseValue = value };
        }
    }

    /// <summary>LENGTH value type - length expressed in percents</summary>
    public sealed class PercentLength : Length
    {
        /// <summary>Closed constructor</summary>
        internal PercentLength() { }

        /// <summary>Renders the length with possible type</summary>
        public override string ToString()
        {
            return base.ToString() + "%";
        }
    }

    /// <summary>LENGTH value type - length expressed in relative units</summary>
    public sealed class RelativeLength : MultiLength
    {
        /// <summary>Closed constructor</summary>
        internal RelativeLength() { }

        /// <summary>Renders the length with possible type</summary>
        public override string ToString()
        {
            return base.ToString() + "*";
        }
    }
}